1. From a single deck of cards, you select a card, look at it, put it back in the deck and shuffle. If you do this 10 times, what is the probability of drawing exactly (1) ace, (b) two aces, (c) 3 aces, or (4) four aces (each of these is calculated separately)? Out of the 10 draws of cards, what is the mean number of aces that you would expect to find?